CVE-2007-6203 Cross-site scripting in n/a

What is CVE-2007-6203?

CVE-2007-6203 is a medium-severity cross-site scripting vulnerability in Apache Http Server, published on 3 Dec 2007. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link.

Official description

Apache HTTP Server 2.0.x and 2.2.x does not sanitize the HTTP Method specifier header from an HTTP request when it is reflected back in a "413 Request Entity Too Large" error message, which might allow cross-site scripting (XSS) style attacks using web client components that can send arbitrary headers in requests, as demonstrated via an HTTP request containing an invalid Content-length value, a similar issue to CVE-2006-3918.

Weakness: CWE-79

Which versions are affected by CVE-2007-6203?

It affects 1 product.

Products include Apache Http Server.

How do I fix CVE-2007-6203?

Upgrade to a fixed version.

Escape output for the context it lands in and set a strict Content Security Policy. Upgrading the affected component is the real fix. More about Cross-site scripting.

Is CVE-2007-6203 being exploited?

It is not confirmed as exploited in the wild, but public exploit code for CVE-2007-6203 exists.

Public exploit code: 1 Exploit-DB entry.

Other vulnerabilities in Apache Http Server

• CVE-2021-42013 Apache HTTP Server Path Traversal Exploited Critical 9.8
• CVE-2024-38475 Apache HTTP Server Improper Escaping of Output Exploited Critical 9.1
• CVE-2021-40438 Apache HTTP Server-Side Request Forgery (SSRF) Exploited Critical 9.0
• CVE-2019-0211 Apache HTTP Server Privilege Escalation Exploited High 7.8
• CVE-2021-41773 Apache HTTP Server Path Traversal Exploited High 7.5

All Apache Http Server vulnerabilities

Sources

• CVE record
• NVD
• OSV
• GitHub advisory
• How this page is made

Also known as DEBIAN-CVE-2007-6203, GHSA-g7xr-j224-9v5w.